通用对色灯管F40W/33-640美国冷白商店光源CWF灯管为美国冷白商店光源(CoolWhiteFluorescent)色温：4150K，美国客户常用；公司经销品牌有：飞利浦PIHLIPS，奇异GE，喜万年SYLVANIA等。PHILIPSTL-D18W/33-640MadeinPolandPHILIPSTL-D30W/33-640MadeinPolandPHILIPSTL-D36W/33-640MadeinPolandSYLVANIAF20T12/CWCoolWhiteUSASYLVANIAF20T12/CWCoolWhiteCanadaSYLVANIAF20W/33-640/RSCOOLWHITEMadeinGermanySYLVANIAINSTANTRAPIDSTARTF20W/33-640/IRSCoolWhiteSYLVANIAF40W/33-640/RSCOOLWHITEMadeinGermanySYLVANIAF30T8/CWCoolWhiteMadeinUSAGEF20W/33-640COOLWHITEMadeinHungaryGEF40W/33-640COOLWHITEMadeinHungaryGEF20T12-CW-ECO20WUSA)